We took the weekend to spend some time in Pennsylvania to do some ultrasonic gun cleaning testing with our machines. For this particular gun, we used our Model HG-1875 gun cleaning tank which housed this 17 inch barrel just fine. The Jap type 99 got fairly dirty as you can see, but by using this ultrasonic cleaning system we brought it back to factory cleanliness. This whole process took less then 10 minutes to clean, dry, and lube the gun parts. The combination of our cleaning solution and heavy duty ultrasonic cleaning tanks combine to give the end user the best cleaning experience on the market. Our company has been in this market for 20+ years, this is our hobby, job, and passion. We stand by our product and our track record speaks for itself!